CN103671264A - Turbocharger and method of producing thereof - Google Patents
Turbocharger and method of producing thereof Download PDFInfo
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- CN103671264A CN103671264A CN201310393416.XA CN201310393416A CN103671264A CN 103671264 A CN103671264 A CN 103671264A CN 201310393416 A CN201310393416 A CN 201310393416A CN 103671264 A CN103671264 A CN 103671264A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 34
- 238000004512 die casting Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/024—Units comprising pumps and their driving means the driving means being assisted by a power recovery turbine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/026—Scrolls for radial machines or engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/21—Manufacture essentially without removing material by casting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/50—Building or constructing in particular ways
- F05D2230/51—Building or constructing in particular ways in a modular way, e.g. using several identical or complementary parts or features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49236—Fluid pump or compressor making
- Y10T29/4924—Scroll or peristaltic type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a turbocharger capable of reducing its costs and enhancing its performance, and provides a method of producing the turbocharger. The turbocharger 1 includes a compressor housing 2, a bearing housing 6 and a back plate 3. A discharge scroll chamber 12 has such a shape that a cross-sectional area thereof gradually increases toward a discharge port in a circumferential direction. The compressor housing 2 includes a scroll piece 4 and a shroud piece 5 which are assembled to each other. The scroll piece 4 includes a suction port-forming portion 41, a suction-side concave surface 42 and a scroll outer periphery 43. The shroud piece 5 includes a shroud fit-in portion 51, an inner peripheral concave surface 52, a shroud surface 53 and a diffuser surface 54. The back plate 3 includes a facing surface 31, an outer peripheral annular fit-in portion 32 and an outer peripheral concave surface 33. The outer peripheral concave surface 33 has such a shape that a cross sectional shape thereof formed by a plane including a rotation axis of an impeller 13 gradually changes in the circumferential direction.
Description
Technical field
The present invention relates to configure turbosupercharger and the manufacture method thereof of backboard between compressor housing and bearing housing.
Background technique
The turbosupercharger of lift-launch on automobile etc. is configured in compressor to be compressed and discharges to internal-combustion engine the air sucking.; in the air flow path of inner side that is formed at compressor housing; have the discharge vortex chamber making from the pressurized air inflow of impeller discharge, this discharge vortex chamber is configured to derives pressurized air to exhaust port, and from exhaust port, pressurized air is discharged to internal combustion engine side.And especially, the shape of discharging vortex chamber causes larger impact to the performance of compressor, seeks performance as requested and is processed into suitable shape.
At this,, for example, there is the method for gravity casting in the method as manufacturing compressor housing.In this case, can use so-called core to cast, so freedom shape is higher, shape that also can be corresponding complicated.Yet because casting cycle is longer, so producibility is not good, cost is also higher.In addition, if use sand mold etc., surface roughness becomes large, therefore also has the such problem of Efficiency Decreasing of compressor.
To this, there is the method for utilizing die casting that compressor housing is shaped.In this case, compare with gravity casting, casting cycle is shorter, so highly productive, and cost is also lower.Yet if not shape that can molding cannot be shaped, so freedom shape is lower, can not corresponding complicated shape.Therefore, as disclosed in Patent Document 1, have by being that scroll element, hood member and periphery annular component are assembled the compressor housing forming each other by three members.Thus, each member is made to the shape being easily shaped by die casting, and guaranteed the freedom shape of the discharge vortex chamber of compressor housing.
In addition, in the turbosupercharger of recording at patent documentation 2, compressor housing consists of scroll element and these two members of hood member.And, on the peripheral part of backboard of a side contrary with suction side that is configured in compressor housing, curved surface is set, using this curved surface as a part of discharging the internal face of vortex chamber.
Technical paper formerly
Patent documentation
Patent documentation 1: No. 4778097 communique of Japan Patent
Patent documentation 2: TOHKEMY 2002-180841 communique
The problem that invention will solve
Yet, the compressor housing of recording as patent documentation 1, part number increases, and also increases during worker, and manufacture cost is raise.In addition, if the positional accuracy of periphery annular component is not made as to extremely high precision, the seam crossing of side end within it likely, hinders from diffusion part to compressed-air actuated smooth and easy the flowing of discharging vortex chamber and discharging.
In addition, in the turbosupercharger of recording at patent documentation 2, the shape that is formed at the curvature portion of backboard is fixed in whole circumferential scope.Therefore, the freedom shape of discharging vortex chamber is restricted, and for forming desirable shape, has produced limitation.
The present invention makes in view of above-mentioned background, and turbosupercharger and the manufacture method thereof that can realize cost, performance raising are provided.
Summary of the invention
For solving the means of problem
The turbosupercharger of a technological scheme of the present invention possesses: compressor housing, and it has the air flow path that has configured impeller in inner side; Bearing housing, it is to linking the rotor shaft rotation supporting freely of above-mentioned impeller; And backboard, it is configured between this bearing housing and compressor housing, towards a part for above-mentioned air flow path, wherein
Above-mentioned air flow path has: suction port, and it is towards above-mentioned impeller air amount; Discharge vortex chamber, its outer circumferential side at above-mentioned impeller is along circumferentially forming, and the pressurized air that will discharge from above-mentioned impeller guide to exhaust port, and this discharge vortex chamber has in week and upwards towards above-mentioned exhaust port sectional area, becomes gradually large shape,
Above-mentioned compressor housing consists of the scroll element of assembling each other and hood member,
Above-mentioned scroll element has: the intakeport forming portion of tubular, and it forms above-mentioned intakeport; Suction side concave surface, it forms the wall of the suction side in above-mentioned discharge vortex chamber; Vortex peripheral part, it is configured in the outer circumferential side of above-mentioned discharge vortex chamber,
Above-mentioned hood member has: the guard shield Embedded Division of tubular, and it is embedded into above-mentioned scroll element; Inner circumferential side concave surface, it forms the wall of the inner circumferential side in above-mentioned discharge vortex chamber; Guard shield face, it is relative with above-mentioned impeller; Diffusing surface, it extends facing to above-mentioned discharge vortex chamber from this guard shield,
Above-mentioned backboard possesses: opposing side, and it is relative with above-mentioned diffusing surface; Periphery ring-type Embedded Division, it is embedded in the above-mentioned vortex peripheral part of above-mentioned scroll element; Outer circumferential side concave surface, it forms the wall of the outer circumferential side in above-mentioned discharge vortex chamber,
This outer circumferential side concave surface have by contain above-mentioned impeller the plane of interior rotating shaft dissect and section shape along the shape (technological scheme 1) that circumferentially gradually changes.
The manufacture method of the turbosupercharger of other technologies scheme of the present invention is when manufacturing above-mentioned turbosupercharger, cast individually above-mentioned scroll element, above-mentioned hood member and above-mentioned backboard, afterwards above-mentioned scroll element and above-mentioned hood member are assembled each other and obtained above-mentioned compressor housing, above-mentioned backboard is fastened on above-mentioned bearing housing, afterwards, above-mentioned compressor housing is assembled on above-mentioned backboard, manufactures thus above-mentioned turbosupercharger, wherein
The mould using while casting above-mentioned backboard, that the central mould handling that above-mentioned sheet material central part is shaped are located in main body mould and are formed freely, this main body mould is shaped above-mentioned opposing side, above-mentioned periphery ring-type Embedded Division and above-mentioned outer circumferential side concave surface, and this central mould is configured to and can changes circumferential phase place with respect to aforementioned body mould and install.(technological scheme 6).
Invention effect
In above-mentioned turbosupercharger, can utilize these two members of above-mentioned scroll element and above-mentioned hood member to form compressor housing, therefore can relatively reduce the part number of compressor housing.Its result, in the time of can reducing the worker of turbosupercharger, can reduce manufacture cost.
In addition, can form by the above-mentioned outer circumferential side concave surface of above-mentioned backboard a part for the wall of discharging vortex chamber.That is, between bearing housing and compressor housing, dispose in the turbosupercharger of backboard, utilize existing part, be a part for backboard, a part of discharging the wall of vortex chamber is formed to concavity.Therefore,, even if do not increase part number, also can improve the freedom shape of discharging vortex chamber.
And, outer circumferential side concave surface have by the rotating shaft that contains above-mentioned impeller interior plane dissect and section shape along the shape that circumferentially gradually changes.The shape of wall that therefore, can make to discharge the outer circumferential side in vortex chamber is along circumferentially gradually changing.Thus, can make the shape of discharging vortex chamber become desirable shape, can realize the desirable Air Flow in compressor.Its result, the performance that can realize turbosupercharger improves.
In addition, the opposing side that above-mentioned outer circumferential side concave surface is relative with above-mentioned diffusing surface is formed on backboard in the lump.Therefore, can between opposing side and outer circumferential side concave surface, not form seam yet.Thereby, can be easily and realize reliably from the space (diffusion part) between above-mentioned diffusing surface and above-mentioned opposing side compressed-air actuated smooth and easy the flowing of discharging to discharging vortex chamber.From above-mentioned viewpoint, also can guarantee that the performance of turbosupercharger improves.
In above-mentioned manufacture method, use the handling of above-mentioned central mould are located to the mould forming on aforementioned body mould freely cast above-mentioned backboard.And central mould is configured to and can changes circumferential phase place with respect to main body mould and carry out installing.Therefore, can with respect to the phase place of sheet material central part, manufacture backboard by appropriate change outer circumferential side concave surface.The phase place of the sheet material central part while assembling in turbosupercharger must be determined by the position of oily exhaust port.On the other hand, although the phase place of outer circumferential side concave surface is set according to the position of exhaust port, its position is different because carrying the difference of kind of vehicle etc. of turbosupercharger.So, can make circumferential phase difference between sheet material central part and outer circumferential side concave surface according to corresponding car type etc. and different.Therefore, as described above, for casting the mould of backboard, be configured to central mould and can change circumferential phase place with respect to main body mould and install, utilize thus a kind of mould, can manufacture according to the backboard of a plurality of kinds of corresponding car type etc.Therefore, according to above-mentioned manufacture method, can manufacturing efficiency compared with highland, manufacture the backboard of a plurality of kinds, can improve the manufacturing efficiency of turbosupercharger.
In sum, according to the present invention, can provide turbosupercharger and the manufacture method thereof that can realize cost, performance raising.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of the compressor section in embodiment 1, is the figure suitable with the A-A line direction of arrow section of Fig. 3.
Fig. 2 is other sectional drawings of the compressor section in embodiment 1, is the figure suitable with the B-B line direction of arrow section of Fig. 3.
Fig. 3 is the plan view of the compressor housing of seeing from suction side in embodiment 1.
Fig. 4 is the sectional drawing of the compressor housing in embodiment 1.
Fig. 5 is the sectional drawing of the backboard in embodiment 1.
Fig. 6 is the explanatory drawing of the global shape of the expression vortex chamber in embodiment 1.
Fig. 7 is the stereogram of the compressor housing in embodiment 1.
Fig. 8 is the stereogram of the backboard in embodiment 1.
Fig. 9 is the rear view of the backboard of seeing from cartridge housing side in embodiment 1.
Figure 10 is the plan view of the backboard of seeing from compressor side in embodiment 1.
(A) of Figure 11 is the sectional drawing of the C-C line direction of arrow of Figure 10, (B) of Figure 11 is the sectional drawing of the D-D line direction of arrow of Figure 10, (C) of Figure 11 is the sectional drawing of the E-E line direction of arrow of Figure 10, and (D) of Figure 11 is the sectional drawing of the F-F line direction of arrow of Figure 10.
Figure 12 is the sectional drawing of the mould in embodiment 1.
Figure 13 is in embodiment 1, (A) is arranged on central mould the plan view of the mould (counterdie) in main body mould, (B) under the phase difference different from (A), central mould is arranged on to the plan view of the mould (counterdie) in main body mould.
Embodiment
In above-mentioned turbosupercharger, " circumferentially " refers to the sense of rotation of above-mentioned impeller, and " axially " refers to the direction of the rotating shaft of above-mentioned impeller.
In addition, preferably, the above-mentioned section shape of above-mentioned outer circumferential side concave surface forms, and radius of curvature upwards becomes (technological scheme 2) greatly towards above-mentioned exhaust port gradually in week.In this case, the shape of above-mentioned discharge vortex chamber further easily can be made to desirable shape.; the outer circumferential side concave surface that forms a part for the wall of discharging vortex chamber possesses shape as described above; in discharging " sectional area upwards becomes large shape towards above-mentioned exhaust port gradually in week " of vortex chamber, be easy to the section shape of its each several part to form desirable shape thus.It should be noted that, above-mentioned radius of curvature is in the situation that the radius of curvature of the section shape that the section shape of above-mentioned outer circumferential side concave surface is circular arc, the in the situation that of beyond circular arc, refers to the average radius of curvature in the entire scope of above-mentioned section shape.
In addition, preferably, above-mentioned outer circumferential side concave shape becomes, and axial size becomes large (technological scheme 3) gradually towards the other end from circumferential one end.In this case, same as described above, also the shape of above-mentioned discharge vortex chamber further easily can be made to desirable shape.
In addition, preferably, above-mentioned outer circumferential side concave shape becomes, and size radially upwards becomes (technological scheme 4) greatly towards above-mentioned exhaust port gradually in week.In this case, same as described above, also the shape of above-mentioned discharge vortex chamber further easily can be made to desirable shape.
In addition, above-mentioned backboard to above-mentioned bearing housing, is to form for the interspersed axis hole of above-mentioned rotor shaft, (technological scheme 5) that form for the oily exhaust port of the interspersed bolt hole of bolt and removal of lubricant comparing with above-mentioned opposing side by the sheet material central part of inner circumferential side by bolton.In this case, if improve in advance its precision when making above-mentioned backboard, can maintain the positional accuracy of the outer circumferential side concave surface making progress in week, and assembling turbine pressurized machine easily.; if in advance so that the mode that the shape of the position of bolt hole and outer circumferential side concave surface becomes the position relationship (phase difference) of regulation at the position relationship making progress in week (phase difference) is made backboard; provide backboard is fixed on to bearing housing in bolt hole place bolton, thus outer circumferential side concave surface is located.And, if make circumferential position and this outer circumferential side concave surface to upper and compressor housing is embedded in to backboard, the position of exhaust port also can be configured according to the position of design, be configured in the corresponding position, position with the pipe arrangement of connecting object.Therefore,, when assembling turbine pressurized machine, can easily configure and discharge vortex chamber and exhaust port at suitable circumferential position.
[embodiment]
(embodiment 1)
Use Fig. 1～Figure 13 to describe the embodiment of above-mentioned turbosupercharger and manufacture method thereof.As shown in Figure 1, this routine turbosupercharger 1 possesses: compressor housing 2, and it has the air flow path 10 that has configured impeller 13 in inner side; Bearing housing 6, it is to linking the rotor shaft 14 rotations supporting freely of impeller 13; And backboard 3, it is configured between bearing housing 6 and compressor housing 2, towards a part for air flow path 10.
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 7, compressor housing 2 consists of the scroll element 4 of assembling each other and hood member 5.
Hood member 5 has: the guard shield Embedded Division 51 of tubular, and it is embedded into scroll element 4; Inner circumferential side concave surface 52, it forms the wall of the inner circumferential side of discharging vortex chamber 12; Guard shield face 53, it is relative with impeller 13; And diffusing surface 54, it extends to discharging vortex chamber 12 from guard shield face 53.
The outer circumferential side concave surface 33 that as shown in Figure 1, Figure 2, Figure 5, backboard 3 possesses the opposing side 31 relative with diffusing surface 54, is embedded into the periphery ring-type Embedded Division 32 in the vortex peripheral part 43 of scroll element 4 and forms the wall of the outer circumferential side of discharging vortex chamber 12.
And, as shown in Figure 1, Figure 2, shown in Figure 10, Figure 11, outer circumferential side concave surface 33 have by contain impeller 13 the plane of interior rotating shaft dissect and section shape (following, during referred to as " section shape ", as long as no special suggestion, refer to the section shape that this plane is dissectd and obtained.) along the shape circumferentially gradually changing.
More particularly, the above-mentioned section shape of outer circumferential side concave surface 33 forms, and radius of curvature upwards becomes large towards exhaust port 15 gradually in week.
In addition, outer circumferential side concave surface 33 forms, and axial size h upwards becomes large towards exhaust port 15 gradually in week.In addition, outer circumferential side concave surface 33 forms, and size w radially also upwards becomes large towards exhaust port 15 gradually in week.It should be noted that, reference character 3a, the 3b in (A) of Figure 11, (B), (C), (D), 3c, 3d represent to be positioned at the section away from the part of the backboard 3 of the position of exhaust port 15 as compressed-air actuated path successively.That is to say, reference character 3a, 3b shown in Figure 11,3c, 3d are that section 12a, the 12b of the discharge vortex chamber 12 shown in each self-forming Fig. 1, Fig. 2 are, the section of a part part of 12c, 12d, backboard 3.
In addition, as shown in Figure 1 and Figure 2, the suction side concave surface 42 of scroll element 4 has section shape along the shape circumferentially gradually changing.In addition, the inner circumferential side concave surface 52 of hood member 5 has section shape along the shape circumferentially gradually changing.Above-mentioned suction side concave surface 42 and inner circumferential side concave surface 52 also form, and in week, upwards the closer to the radius of curvature of the above-mentioned section shape of exhaust port 15 side, become more gradually large.
And, by rotor shaft 14 being rotated to the bearing housing 6 of pivot suspension freely, be configured between compressor housing 2 and turbine shroud.As shown in Figure 1, Figure 2, shown in Fig. 8, Fig. 9, in axial one end of bearing housing 6, be fixed with the tabular backboard of approximate circle 3.
In this example, bolt hole 342 forms four, and oily exhaust port 343 forms one.As shown in Figure 9, oily exhaust port 343, on the face of bearing housing 6 sides of backboard 3, is configured between the pair of bolts hole 342 that makes progress in week adjacent.Oil exhaust port 343 caves on the thickness direction of backboard 3, is configured to oily lead path (the omitting diagram) guiding to bearing housing 6 by the lubricant oil flowing down from axis hole 341.
And, as shown in Fig. 8, Figure 10, on the face of the compressor side of backboard 3, be respectively circular formation opposing side 31 and outer circumferential side concave surface 33.As shown in Figure 5, opposing side 31 and outer circumferential side concave surface 33 form each other continuously.That is, opposing side 31 is as forming with the tabular surface of axial quadrature, outer circumferential side concave surface 33 from the outer circumference end of opposing side 31 continuously, not via ladder and other places, form to compressor side crooked.And as described above, outer circumferential side concave surface 33 forms its section shape and upwards gradually changes in week.
As shown in Figure 6, discharge vortex chamber 12 forms roughly circular, and exhaust port 15 is outstanding to circumferential tangent direction from discharging vortex chamber 12.And, to discharge vortex chamber 12 and form, sectional area is along circumferentially becoming gradually large towards exhaust port 15.It should be noted that reference character 12a, 12b, 12c, 12d in Fig. 1, Fig. 2 represents to be positioned at the section away from the discharge vortex chamber 12 of the position of exhaust port 15 as compressed-air actuated path successively.
Therefore, forming and discharging suction side concave surface 42 vortex chamber 12, scroll element 4 and the inner circumferential side concave surface 52 of hood member 5 and the outer circumferential side concave surface 33 of backboard 3 is not Rotational Symmetry separately, but its section shape is along circumferentially gradually changing.And as shown in Figure 1, Figure 2, shown in Figure 10, Figure 11, backboard 3 has the size (axial size h and size w radially) of the above-mentioned section shape of outer circumferential side concave surface 33 and mean radius of curvature along circumferentially becoming gradually large shape.That is, above-mentioned size h, w and above-mentioned mean radius of curvature upwards become large towards exhaust port 15 gradually in week.
In addition, as shown in figure 10, in a circumferential part for backboard 3, form the discharge connection recess 35 forming to connect the mode between vortex chamber 12 and exhaust port 15 of discharging.Discharge to be communicated with recess 35 and to form, between the axial dimension h of outer circumferential side concave surface 33 the best part and minimum part, become parallel with exhaust port 15.That is to say, removing of backboard 3, be formed with within the scope of the roughly complete cycle of discharging the part that is communicated with recess 35, from discharge with respect to shown in Figure 10 be communicated with recess 35 first in abutting connection with position 351 to second in abutting connection with position 352, each size h, the w of outer circumferential side concave surface 33 and radius of curvature upwards become large gradually in week.
In addition, as shown in Fig. 8, Figure 10, at the outer circumferential side of outer circumferential side concave surface 33, is communicated with recess 35 at the adjoining position that makes progress in week with discharging, be formed with the location end difference 36 of the circumferential position of definite backboard 3 and compressor housing 2.That is, as shown in Figure 7, on compressor housing 2, in position corresponding to location end difference 36 with backboard 3, be also formed with location end difference 46.
The scroll element 4 and the hood member 5 that form compressor housing 2 all consist of the die castings of aluminum.As shown in Figure 4, scroll element 4 makes intakeport forming portion 41 form the drum centered by the rotating shaft of impeller 13.And, from the end of the side contrary with suction side of intakeport forming portion 41 (following, suction side is taken the circumstances into consideration to be called " tip side ", its contrary side is taken the circumstances into consideration to be called " terminal side ".), in the mode to outer circumferential side expansion, form the vortex wall forming portion 420 with suction side concave surface 42.And, at the outer peripheral portion of vortex wall forming portion 420, in the mode of extending to terminal side, be provided with vortex peripheral part 43.
The inner side surface of guard shield Embedded Division 51 forms from its terminal side to be expanded toward the outer side, forms thus guard shield face 53.And guard shield face 53 is connected with the diffusing surface 54 to being orthogonal to axial direction expansion at its outer circumferential side.
In addition, as shown in Figure 1 and Figure 2, impeller 13 is configured in the inner circumferential side of hood member 5.Impeller 13 is by making outstanding formation of outer circumferential face along a plurality of blades of circumferential array from lining.The relative configuration of guard shield face 53 of a plurality of blades and hood member 5.
When the compressor section of assembling turbine pressurized machine 1, first, guard shield Embedded Division 51 is pressed into the inner side of intakeport forming portion 41, on scroll element 4, assemble thus hood member 5, form the compressor housing 2 shown in Fig. 4, Fig. 7.On the other hand, be fixed on bearing housing 6 backboard 3 is fastening.
Afterwards, compressor housing 2 is assembled on backboard 3.That is, as shown in Figure 1 and Figure 2, the mode with the inner side configuration impeller 13 at compressor housing 2, is being fixed on assemble compressible engine housing 2 on the backboard 3 of bearing housing 6.Now, the periphery ring-type Embedded Division 32 of backboard 3 is pressed into the inner side of the vortex peripheral part 43 of scroll element 4.
Now, the location end difference 46 by making scroll element 4 week upwards with location end difference 36 butts of backboard 3, determine the circumferential position of backboard 3 and compressor housing 2.
Thus, the diffusing surface 54 of hood member 5 is with the opposing side 31 of backboard 3 to be provided with each other relative configuration of state at the interval of regulation, and between forms diffusion part 16 thus.And, at the outer circumferential side of diffusion part 16, utilize the outer circumferential side concave surface 33 of the suction side concave surface 42 of scroll element 4, the inner circumferential side concave surface 52 of hood member 5 and backboard 3, form and discharge vortex chamber 12.
The mould 7 using while as shown in figure 12, casting backboard 3 is that the central mould that sheet material central part 34 is shaped 721,722 handling are located at freely in the main body mould 711,712 that opposing side 31, periphery ring-type Embedded Division 32 and outer circumferential side concave surface 33 are shaped and are formed.As shown in figure 13, central mould 721,722 is configured to and can changes circumferential phase place with respect to main body mould 711,712 and install.
Mould 7, the counterdie forming in the main body mould 711 that a side central mould 721 is arranged on to a side and the opposing party's main body mould 712 and the opposing party's central mould 722 is installed between the patrix forming, possesses die cavity 70.
At counterdie (side main body mould 711 and central mould 721), be formed with the profile of the face shaping of bearing housing 6 sides that make backboard 3.In addition, at patrix (the opposing party's main body mould 712 and central mould 722), possesses the profile of the face shaping of compressor housing 2 sides that make backboard 3.And a side central mould 721, in its profile, has the jut 723 that oily exhaust port 343 is shaped.It should be noted that, except jut 723, in central mould 721,722, be also formed with various concaveconvex shapes, in Figure 12, by its omission.In addition, for the profile of main body mould 711,712 also simplicity of illustration.
And as shown in figure 13, the Normal direction from profile of central mould 721 is seen is shaped as circle.Thus, with respect to main body mould 711, central mould 721 can with make progress in week arbitrarily towards installing.The shape that the Normal direction from profile of the opposing party's central mould 722 is seen becomes circle similarly, can with respect to main body mould 712 with make progress in week arbitrarily towards installing.
Therefore, for example, under the state shown in (B) of the state shown in (A) of Figure 13 and this Figure 13, change central mould 721(722) with respect to main body mould 711(712) installation towards, die-cast backboard 3, obtains diverse backboard 3 each other thus.At this, diverse backboard 3 refers to sheet material central part 34(oil exhaust port 343 each other) and outer circumferential side concave surface 33(locate end difference 36) between the backboard 3 that differs from one another of phase difference (circumferential position relationship).
Next, this routine action effect is described.
In above-mentioned turbosupercharger 1, can utilize scroll element 4 and hood member 5 these two members to form compressor housing 2, therefore can relatively reduce the part number of compressor housing 2.Its result, in the time of can reducing the worker of turbosupercharger 1, can reduce manufacture cost.
In addition, can utilize the outer circumferential side concave surface 33 of backboard 3 to form a part for the wall of discharging vortex chamber 12.That is, between bearing housing and compressor housing, configured in the turbosupercharger of backboard, utilized existing part, be a part for backboard 3, a part of discharging the wall of vortex chamber 12 has been formed to concavity.Therefore,, even if do not increase part number, also can improve the freedom shape of discharging vortex chamber 12.
And outer circumferential side concave surface 33 has section shape along the shape circumferentially gradually changing.The shape of wall of outer circumferential side that therefore, can make to discharge vortex chamber 12 is along circumferentially gradually changing.Thus, the shape of discharging vortex chamber 12 can be made to desirable shape, can realize the desirable Air Flow in compressor.Its result, the performance that can realize turbosupercharger 1 improves.
In addition, outer circumferential side concave surface 33 is formed on backboard 3 in the lump with opposing side 31.Therefore, between opposing side 31 and outer circumferential side concave surface 33, can not form seam.Thereby, can be easily and realize reliably from diffusion part 16 to compressed-air actuated smooth and easy the flowing of discharging vortex chamber 12 and discharging.From above-mentioned viewpoint, also can guarantee that the performance of turbosupercharger 1 improves.
In addition, the above-mentioned section shape of outer circumferential side concave surface 33 forms, and in week, upwards towards exhaust port 15 radius of curvature, becomes gradually greatly, and axial size h and size w radially become large gradually.Thus, the shape of discharging vortex chamber 12 more easily can be made to desirable shape.; the outer circumferential side concave surface 33 of a part that makes form to discharge the wall of vortex chamber 12 possesses shape as described above; in discharging " sectional area upwards becomes large shape towards exhaust port 15 gradually in week " of vortex chamber 12, the section shape of its each several part is easily formed to desirable shape thus.
In addition, backboard 3 forms by formation axis hole 341, bolt hole 342 and oily exhaust port 343 are formed on to sheet material central part 34.Thus, if improve in advance its precision when making backboard 3, can maintain the positional accuracy of the outer circumferential side concave surface 33 making progress in week, and assembling turbine pressurized machine 1 easily.; if make in advance backboard 3 so that the circumferential position relationship (phase difference) between the position of bolt hole 342 and the shape of outer circumferential side concave surface 33 becomes the mode of the position relationship (phase difference) of regulation; backboard 3 is fixed on to bearing housing 6 in bolt hole 342 place's bolton, thus to outer circumferential side concave surface 33 location.And, if make 33 pairs of circumferential position and this outer circumferential side concave surfaces upper and make compressor housing 2 be embedded in backboard 3, the position of exhaust port 15 also can be configured according to the position of design, with the corresponding position, position of the pipe arrangement of connecting object.That is to say, make the location end difference 46 of scroll element 4 along location end difference 36 butts of circumferential and backboard 3, compressor housing 2 is assembled on backboard 3.Thus, utilize outer circumferential side concave surface 33 and suction side concave surface 42, can form correct discharge vortex chamber 12, and make exhaust port 15 towards suitable direction.Like this, when assembling turbine pressurized machine 1, can easily configure and discharge vortex chamber 12 and exhaust port 15 at suitable circumferential position.
In addition, in above-mentioned manufacture method, use central mould 721,722 handling are arranged on to the mould 7 forming in main body mould 711,712 freely cast backboard 3.And central mould 721,722 is configured to and can changes circumferential phase place with respect to main body mould 711,712 and install.Therefore, can with respect to the phase place of sheet material central part 34, manufacture backboard 3 by appropriate change outer circumferential side concave surface 33.The phase place of the sheet material central part 34 while assembling in turbosupercharger 1 must be determined by the position of oily exhaust port 343.On the other hand, although the phase place of outer circumferential side concave surface 33 is set according to the position of exhaust port 15, its position is different because carrying the difference of kind of vehicle etc. of turbosupercharger 1.So, can make circumferential phase difference between sheet material central part 34 and outer circumferential side concave surface 33 according to corresponding car type etc. and different.Therefore, as described above, for the mould 7 of casting backboard 3, be configured to central mould 721,722 and can change circumferential phase place with respect to main body mould 711,712 and install, utilize thus a kind of mould 7, can manufacture according to the backboard 3 of a plurality of kinds of corresponding car type etc.Therefore, according to above-mentioned manufacture method, can manufacturing efficiency compared with highland, manufacture the backboard 3 of a plurality of kinds, can make the manufacturing efficiency of turbosupercharger 1 improve.
As mentioned above, according to this example, can provide turbosupercharger and the manufacture method thereof that can realize cost, performance raising.
It should be noted that, in the above-described embodiments, show the example that scroll element and hood member are the die casting system of aluminium, but be not limited to this, also can utilize other materials, other method for makings to form these members.For example, also can utilize resin molded part etc. to form hood member.
In addition, in the above-described embodiments, backboard is also made to the die casting system of aluminium, but and needn't be defined in this.
In addition, for the mould shown in above-described embodiment, not necessarily non-at upper die and lower die, both install central mould and are also fine.That is, only for example also can be configured at counterdie or patrix and can load and unload central mould is installed.
Description of reference numerals:
1 turbosupercharger
10 air flow paths
11 intakepories
12 discharge vortex chamber
13 impellers
14 rotor shafts
15 exhaust ports
2 compressor housings
3 backboards
31 opposing sides
32 periphery ring-type Embedded Divisions
33 outer circumferential side concave surfaces
4 scroll elements
41 intakeport forming portions
42 suction side concave surfaces
43 vortex peripheral parts
5 hood members
51 guard shield Embedded Divisions
52 inner circumferential side concave surfaces
53 guard shield faces
54 diffusing surfaces
6 bearing housinges
Claims (6)
1. a turbosupercharger, it possesses: compressor housing, it has the air flow path that has configured impeller in inner side; Bearing housing, it is to linking the rotor shaft rotation supporting freely of above-mentioned impeller; And backboard, it is configured between this bearing housing and compressor housing, and the part towards above-mentioned air flow path, is characterized in that,
Above-mentioned air flow path has: suction port, and it is towards above-mentioned impeller air amount; Discharge vortex chamber, its outer circumferential side at above-mentioned impeller is along circumferentially forming, and the pressurized air that will discharge from above-mentioned impeller guide to exhaust port, and this discharge vortex chamber has in week and upwards towards above-mentioned exhaust port sectional area, becomes gradually large shape,
Above-mentioned compressor housing consists of the scroll element of assembling each other and hood member,
Above-mentioned scroll element has: the intakeport forming portion of tubular, and it forms above-mentioned intakeport; Suction side concave surface, it forms the wall of the suction side of above-mentioned discharge vortex chamber; With vortex peripheral part, it is configured in the outer circumferential side of above-mentioned discharge vortex chamber,
Above-mentioned hood member has: the guard shield Embedded Division of tubular, and it is embedded into above-mentioned scroll element; Inner circumferential side concave surface, it forms the wall of the inner circumferential side in above-mentioned discharge vortex chamber; Guard shield face, it is relative with above-mentioned impeller; And diffusing surface, it extends facing to above-mentioned discharge vortex chamber from this guard shield,
Above-mentioned backboard possesses: opposing side, and it is relative with above-mentioned diffusing surface; Periphery ring-type Embedded Division, it is embedded in the above-mentioned vortex peripheral part of above-mentioned scroll element; With outer circumferential side concave surface, it forms the wall of the outer circumferential side of above-mentioned discharge vortex chamber,
This outer circumferential side concave surface have by the rotating shaft that contains above-mentioned impeller interior plane dissect and section shape along the shape that circumferentially gradually changes.
2. turbosupercharger according to claim 1, is characterized in that,
The above-mentioned section shape of above-mentioned outer circumferential side concave surface forms, and radius of curvature upwards becomes large towards above-mentioned exhaust port gradually in week.
3. turbosupercharger according to claim 1 and 2, is characterized in that,
Above-mentioned outer circumferential side concave shape becomes, and axial size becomes large gradually from circumferential one end towards the other end.
4. turbosupercharger according to claim 1 and 2, is characterized in that,
Above-mentioned outer circumferential side concave shape becomes, and size radially upwards becomes large towards above-mentioned exhaust port gradually in week.
5. turbosupercharger according to claim 1 and 2, is characterized in that,
Above-mentioned backboard to above-mentioned bearing housing, is to form for the interspersed axis hole of above-mentioned rotor shaft, for the interspersed bolt hole of bolt and the oily exhaust port of removal of lubricant, form at the sheet material central part of comparing with above-mentioned opposing side by inner circumferential side by bolton.
6. the manufacture method of a turbosupercharger, when the turbosupercharger described in manufacturing claim 5, cast individually above-mentioned scroll element, above-mentioned hood member and above-mentioned backboard, afterwards above-mentioned scroll element and above-mentioned hood member assembled each other and obtained above-mentioned compressor housing, above-mentioned backboard being fastened on above-mentioned bearing housing, afterwards, above-mentioned compressor housing is assembled on above-mentioned backboard, manufacture thus above-mentioned turbosupercharger, it is characterized in that
The mould using while casting above-mentioned backboard, that the central mould handling that above-mentioned sheet material central part is shaped are located in main body mould and are formed freely, this main body mould is shaped above-mentioned opposing side, above-mentioned periphery ring-type Embedded Division and above-mentioned outer circumferential side concave surface, and this central mould is configured to and can changes circumferential phase place with respect to aforementioned body mould and install.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012207890A JP5985329B2 (en) | 2012-09-21 | 2012-09-21 | Turbocharger and manufacturing method thereof |
| JP2012-207890 | 2012-09-21 |
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| Publication Number | Publication Date |
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| CN103671264A true CN103671264A (en) | 2014-03-26 |
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| CN201310393416.XA Active CN103671264B (en) | 2012-09-21 | 2013-09-03 | Turbocharger and method of producing thereof |
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| Country | Link |
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| US (1) | US9404509B2 (en) |
| EP (1) | EP2711555B1 (en) |
| JP (1) | JP5985329B2 (en) |
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| CN104454652A (en) * | 2014-10-16 | 2015-03-25 | 珠海格力电器股份有限公司 | Volute structure, centrifugal compressor and refrigeration equipment |
| CN105317540A (en) * | 2014-07-07 | 2016-02-10 | 丰田自动车株式会社 | Turbocharger |
| CN105570194A (en) * | 2014-10-29 | 2016-05-11 | 欧德克斯有限公司 | Compressor structure for turbochargers |
| CN106609771A (en) * | 2015-10-27 | 2017-05-03 | 欧德克斯有限公司 | Compressor housing for turbocharger and method for manufacturing same |
| CN107076015A (en) * | 2014-11-04 | 2017-08-18 | 三菱重工业株式会社 | The manufacture method of turbine shroud and turbine shroud |
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| JP6072299B2 (en) * | 2013-12-04 | 2017-02-01 | 三菱重工業株式会社 | Sheet metal turbine housing |
| GB201409976D0 (en) * | 2014-06-05 | 2014-07-16 | Cummins Ltd | Method of manufacturing a compressor housing |
| JP6535584B2 (en) | 2015-11-27 | 2019-06-26 | 株式会社オティックス | Method of manufacturing compressor housing |
| WO2017168650A1 (en) * | 2016-03-30 | 2017-10-05 | 三菱重工業株式会社 | Compressor scroll and centrifugal compressor |
| US10519974B2 (en) | 2017-10-17 | 2019-12-31 | Borgwarner Inc. | Multi-piece compressor housing for a turbocharger |
| US11319870B1 (en) * | 2021-04-13 | 2022-05-03 | Eyal Ezra | Turbocharger control valve for retaining back pressure and maintaining boost pressure |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5985329B2 (en) | 2016-09-06 |
| CN103671264B (en) | 2017-04-12 |
| EP2711555B1 (en) | 2019-03-27 |
| US9404509B2 (en) | 2016-08-02 |
| EP2711555A2 (en) | 2014-03-26 |
| US20140086726A1 (en) | 2014-03-27 |
| JP2014062492A (en) | 2014-04-10 |
| EP2711555A3 (en) | 2016-03-16 |
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